# CV/Gate input/output

**URL:** <https://discourse.zynthian.org/t/cv-gate-input-output/3182>\
**Category:** Hardware\
**Created:** [August 20, 2019, 8:22am UTC](https://discourse.zynthian.org/t/cv-gate-input-output/3182 "2019-08-20T08:22:09Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![jofemodo](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/jofemodo/32/2_2.png) [@jofemodo](https://discourse.zynthian.org/u/jofemodo)\
**Post date:** [September 5, 2019, 3:37pm UTC](https://discourse.zynthian.org/t/cv-gate-input-output/3182/7 "2019-09-05T15:37:49Z")

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OK! I’ve a zynaptik with all the parts soldered on it:

 ![zynaptik_a_full](https://discourse.zynthian.org/uploads/default/original/2X/f/fbf4e8840a3a9765962e84b8a553bb3378ee26ca.jpeg)

The second 40-pin connector is the “zynaptik connector” and has this pin-out:

 ![zynaptik_40rowpin_connector](https://discourse.zynthian.org/uploads/default/original/2X/2/28f20282a497ab2bcd5825aa6c904ffc5b1dd78f.png)

Where:

- GPAx & GPBx are digital input/output pins (MCP23017, at I2C address 0x21)
- INTA & INTB are interrupt pins for banks GPAx & GPBx, connected to RBPi pins 36 & 37.
- AD-x are analog input pins (ADS1115)
- DA-x are analog output pins (MCP4728)

I will copy this info to the wiki ASAP 😉

Regards,

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